The products arrays and sales tax and shipping options variables are contained in order-fns.php. This is where you will make most of the changes to implement the form for your use.
There is no need to edit form.php, except perhaps to change the title and heading.
Enter the email address you wish orders to be sent to in the $to_address variable near the top of the file.
Payment processing is left out of this example. You could include a button for payment and pass the necessary information to the payment processor of your choice.
The dyn-web code Price List and Order Form demonstrates passing the total and other information to PayPal for processing. Check a box or two and hit the Submit button. The PayPal Pay Now button source code can be adapted to accept the total.
For example, the following line transfers the grand total to the PayPal button's amount field:
<input type="hidden" name="amount" value="<?php echo $grand_tot ?>">
The necessary information could also be transferred to other payment processors in a similar fashion.
Upload the edited files to a php-enabled server for testing.
Please read dyn-web's Terms of Use if you plan to use our code.